update motion sync

Readme.md

@@ -1016,7 +1016,41 @@ PB_BSREAD -> sample how to configure user Flags
 
 Gate3[1].Chan[0].UserFlag -> is set to 0 when event triggered (mapped to output FronUnivOut4 in the EVR)
 
+EVR output powerBrick register $(USR_FLAG_ID)
+FrontUnivOut4 Gate3[1].Chan[0].UserFlag    5
+FrontUnivOut5 Gate3[1].Chan[1].UserFlag    6
+FrontUnivOut6 Gate3[1].Chan[2].UserFlag    7
 
+Event 254 -> Pulser 0 -> FrontUnivOut4 Gate3[1].Chan[0].UserFlag
+Event  40 -> Pulser 1 -> FrontUnivOut4 Gate3[1].Chan[1].UserFlag
+Event  22 -> Pulser 2 -> FrontUnivOut4 Gate3[1].Chan[2].UserFlag
+
+caput SAR-CVME-TIFALL5-EVG0:SoftEvt-EvtCode-SP 254
+
+
+Sample test code for sync:
+
+open prog 2
+Gate3[0].GpioData[0].16.1=0
+linearabs
+//X50Y-0
+dwell10
+while(Gate3[1].Chan[0].UserFlag==0){}
+while(1)
+{
+if(Gate3[1].Chan[1].UserFlag==0)
+{
+break
+}
+}
+Gather.Enable=2
+Gate3[0].GpioData[0].16.1=1
+//pvt40abs
+//X50:443.604Y-0:0
+dwell1000
+Gather.Enable=0
+close
+b2r
 ```